similar to: Code for Ambisonics

Hi, I have posted this three times to the flac-dev, vorbis-dev, and ogg-dev mailing lists. I wanted to see what code there was currently to support Ambisonics. So I downloaded the code from the xiph download page for libogg-1.1.3, libvorbis-1.1.2, vorbis-tools-1.1.1 and flac-1.1.4, but wasn't able to find anything. If it exists then I missed it, so could somebody please point me to it.

Martin, I do not believe that there is any need for code specifically supporting Ambisonics. FLAC supports conversion to and from other audio formats which hold multiple channels. Ambisonics B-format involves channels WXYZ, C-format is UHJ or BHJ, G-Format can be any number of channels, but typically 5.1 on DVD. You can work with Ambisonic recordings by either using individual mono

"Gabriel I." wrote: > Greetings, > > I apologize if I posted this in the wrong list, I wasn't sure where to post > it, but seeing as the tags are called "vorbis comments" I thought vorbis, > rather than ogg-dev, would be the right choice. (actually, I'm not even a > developer anyway) Hi Gabriel, I doubt whether the Xiph community would promote a

Ian Malone <ibmalone@gmail.com> wrote: > It depends what your aim is. The mapping type > in the vorbis setup header is meant for > this[1],[2]. Of course a nonzero mapping type will > cause a lot of players to give up, but so will > including the XML stream. I believe this is how > is was intended multi-channel would be handled. Thanks for the response, and for the

On 3/22/07, Brian Willoughby <brianw@sounds.wa.com> wrote: ... > But to return to your question, exactly what kind of "support" are > you looking for? I wasn't looking for any particular support, but just to see what support was there (if any). ... > I do not believe that there is any need for code specifically > supporting Ambisonics. FLAC supports conversion to

"Oliver Oli" <oliver.oli+0815 at gmail.com> wrote: > Are we sure we know what we are talking about? What is Ogg, what is > Vorbis and what OggPCM? Maybe one of the developers can bring > enlightenment to us :-). As I understood it OggPCM is equivalent to > Vorbis. So it's not Ogg/PCM, but Ogg/OggPCM. Please correct me if I'm > telling utterly crap. Yep,

Michael Graczyk wrote: ... > UHJ is an interesting way to preserve compatibility with non-ambisonic > playback systems. ... > If UHJ becomes popular in the future, we could > specify rules for encapsulating UHJ in Ogg. I guess it depends on how you define popular. The UHJ Discography lists over 270 UHJ-encoded records. This EXcludes over 450 releases by Nimbus Records. The UHJ

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

"Bob Ingraham" wrote: > Subject: [Vorbis] Encoding using Fishsound + Vorbis = Strange > "RoboCop" artifact > Hello Fellow-Vorbisites, > > I've written a multi-track encoding/decoding library based upon fishsound. > > Utilized Visual Studio 2010 to build 32-bit DLL's (Debug mode - no > optimization) of all the following: > > libogg 1.3.1

On 9/26/07, Josh Coalson <xflac@yahoo.com> wrote: > --- Martin Leese <martin.leese@stanfordalumni.org> wrote: ... > > Where can I find more detail on what is a > > "non-audio" RIFF chunk? > > it is any riff chunk that is not "fmt " or "data" > > > Ambisonic ".amb" files are WAVE-EX files with > > a

Brian Willoughby <brianw at sounds.wa.com> > Isn't there a standard option to place FLAC data within an Ogg > container? I don't use it myself, but I understand that it is quite > popular. Would it be possible to interleave multiple FLAC blocks > this way? In other words, can Ogg suffice as the second level of > grouping that you refer to? Etienne was asking for

Not sure if this belongs here or in flac-dev. I am subscribed to both, so flop it over if fits better over there. Looking at the Changelog for FLAC 1.2.1 (17-Sep-2007), it says: "With the new --keep-foreign-metadata in flac, non-audio RIFF and AIFF chunks can be stored in FLAC files and recreated when decoding." Where can I find more detail on what is a

Brian Willoughby <brianw at sounds.wa.com> wrote: > On Jan 7, 2011, at 16:27, Declan Kelly wrote: ... >> As the human hearing can't really tell direction with lower >> frequencies, >> it's not as essential. This same shortcut is why most movie "surround >> sound" systems have only one sub bass channel. > > In this case, you have been misled

On 10/25/18, Rodger Combs wrote: > >> On Oct 25, 2018, at 12:47, Martin Leese <martin.leese at stanfordalumni.org> >> wrote: ... >> An alternative approach is to only define >> popular layouts. For more obscure layouts, >> such as 2.1 and Mid/Side, assume that the >> person doing the encoding knew what they >> put in, and so knows what will come

On 7/23/13, Silvia Pfeiffer <silviapfeiffer1 at gmail.com> wrote: > On 23 Jul 2013 15:17, "Martin Leese" <martin.leese at stanfordalumni.org> > wrote: ... >> Information about Metadata >> has been collected together in the Xiph Wiki >> at: >> https://wiki.xiph.org/Metadata > > That page is a bit outdated. It has CMML in it which we

---------- Forwarded message ---------- From: Martin Leese <martin.leese at stanfordalumni.org> Date: Mon, 20 Dec 2010 21:42:04 -0700 Subject: To: flac-dev at xiph.org Erik de Castro Lopo wrote: > Can someone please remove this moron > spammer [Gourav Tewatia] from this list. And also delete their four posts from the archive (otherwise the SPAM links will be picked up by search

I have been tidying up bits of the Wiki. This one is not clear cut, so I decided to seek advice. Also, I wasn't sure where to post this question, so defaulted to ogg-dev. Should Speex and CMML be removed from the Wiki Sidebar at: https://wiki.xiph.org/MediaWiki:Sidebar ? Many thanks, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web:

Erik de Castro Lopo <mle+xiph@mega-nerd.com> wrote: > Martin Leese wrote: > > So what is "OggPCM"? I started this thread > > because I was puzzled why someone was > > changing a draft instead of the document > > itself. > > The original OggPCM was started by a person who really didn't > lnow what they were doing and wouldn't listen to

On August 9, 2013, Silvia Pfeiffer wrote: > On Thu, Jul 25, 2013 at 6:36 AM, Martin Leese wrote: ... >> Should Speex and CMML be removed from >> the Wiki Sidebar > Don't remove Speex - it's still very much in use. > > We probably want to add Daala to the list of video codecs: > https://wiki.xiph.org/Daala > > We probably want to remove CCML from the